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The total surface area of a cube is 181.5cm
2
. Find its side (in cm).

  1. A
    6.5
  2. B
    4.5
  3. C
    7.5
  4. D
    5.5

Solution & Step-by-step Explanation

The total surface area (TSA) of a cube with side length a is given by:
TSA=6a
2

Given that TSA =181.5cm
2
:

6a
2
=181.5
a
2
=
6
181.5


a
2
=30.25
a=
30.25


=5.5cm

Practice this question

Try it yourself before checking the explanation above.

The total surface area of a cube is 181.5cm
2
. Find its side (in cm).
A
6.5
B
4.5
C
7.5
D
5.5

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